An item referred to the magazine Marine Rundschau dated March 1928 reporting that the Royal British navy possessed 57 completed submarines of which 38 measured more as 800 ton and the major part with a surfaced speed of 17,5 miles. The newest boats were the L26, X I and Oberon (1) and the two Australian submarines Otway and Oxely. The 12 submarines now being built belonged to the O and P classes with a displacement of 1.300-1.400 tons.
Note
1. First of the O class submarines, laid down at the Chatham Dockyard, England on 24 September 1924, launched on 24 September 1926, commissioned on 24 August 1927, decommissioned on 5 July 1844 and sold to be broken up on 24 August 1945. Pennant number P21.
